Window Tap Alarm Kit with Arduino Uno + LED
Window Tap Alarm Kit: Build Your Own Vibration-Activated Buzzer with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine a simple circuit that can guard your window from tampering. With this kit, you’ll build a real security alarm that sounds a buzzer whenever someone taps the window glass – giving you instant awareness. It’s the perfect first project to learn how sensors and microcontrollers work together, no soldering required.
What You'll Build
You’ll assemble a working alarm system that uses a piezo disk to detect vibrations from tapping or knocking. When the sensor picks up a tap, the Arduino triggers a loud buzzer and flashes bright red LEDs to alert you. You can adjust the sensitivity with a potentiometer to avoid false alarms from small bumps, turning it into a reliable guard for your room or workspace.
What You'll Learn
- How a piezo disk converts mechanical vibrations into electrical signals
- Reading analog sensor values with Arduino Uno
- Using threshold-based triggering to control outputs
- Building an adjustable sensitivity circuit with a potentiometer
- Integrating a buzzer and LEDs as alarm indicators
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| Piezo Disk 27mm | x2 |
| Active Buzzer | x1 |
| 5mm Red LED | x2 |
| 1MΩ Resistors | x5 |
| 10kΩ Resistors | x5 |
| 10kΩ Potentiometer | x1 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
| 9V Battery Snap | x1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for absolute beginners aged 5–15 who want to build a real working alarm. It’s a great fit for ATL Tinkering Lab activities, CBSE school projects (Class 6-10), and parent-child weekend builds. No prior experience with Arduino or electronics is needed – the included guide and AI support make every step clear.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
The AI companion, accessible via QR code on the box, provides interactive step‑by‑step help. You can also reach our support team on WhatsApp for real‑time guidance.
How does the tap detection work?
The piezo disk vibrates when the glass is tapped, generating a small voltage. The Arduino reads this analog signal and triggers the buzzer and LEDs when the signal exceeds the threshold set by the potentiometer.
Can I use this alarm on a door or other surface?
Yes, the piezo sensor can be attached to any flat surface—wood, metal, or plastic. You can experiment with different locations and sensitivity adjustments to suit your need.
Is previous coding experience required?
No coding experience is needed. The AI companion and project guide walk you through every line of code and wiring step, making it easy for first‑time builders.
Piezo disk on window detects tapping impact and triggers buzzer. Sensitivity adjustable via potentiometer.
What's in this kit
- Arduino Uno R3
- Piezo Disk 27mm x2
- Active Buzzer
- 5mm Red LED x2
- 1MΩ Resistors x5
- 10kΩ Resistors x5
- 10kΩ Potentiometer
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items